I have a 2016 C4 flair 1.6 blue hdi should I have had a recall for the ad blue tank cap? Also my stop start hasn’t worked this year my dealer tells me it’s just the battery take it for a run but it’s still not kicked in, finally every now and then when I start the car it sounds like a tractor judders violently then cuts out it’s in for service on Monday just want some ammo for Monday morning.

As far as I am aware, all Blue HDis need replacement caps, but it is unlikely you will be informed without actually asking a dealer. I can't remember the last recall I have had through the pst, and I have had several done!